Computation and Measurement of the Flow in Axial Flow Fans With Skewed Blades
Computation and Measurement of the Flow in Axial Flow Fans With Skewed Blades
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DOI：
10.1115/1.2841234
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发表时间：
1999
影响因子：
1.7
通讯作者：
M. G. Beiler;T. Carolus
中科院分区：
文献类型：
--
作者：
M. G. Beiler;T. Carolus
本文对具有倾斜叶片的轴流通风机内的流动进行了数值分析，以研究与这种叶片形状有关的三维流动现象。这种特殊的风扇具有低压升，并且设计为无定子。最初的研究集中在叶片在圆周方向上的倾斜，其次是调查叶片扫在叶片弦的方向。一个Navier-Stokes代码被用来调查流动。对几种风机的仿真结果进行了实验验证。采用三传感器热膜探针在固定参考系中测量了三维速度场。采用快速响应总压探头进行总压分布测量。对计算结果进行了分析，提出了后掠叶片风机的设计方法。据此设计的前掠风扇表现出良好的空气动力学性能。在声学风扇测试设施上测量的声功率级有所改善。
A numerical analysis of the flow in axial flow fans with skewed blades has been conducted to study the three-dimensional flow phenomena pertaining to this type of blade shape. The particular fans have a low pressure rise and are designed without stator. Initial studies focused on blades skewed in the circumferential direction, followed by investigations of blades swept in the direction of the blade chord. A Navier-Stokes code was used to investigate the flow. The simulation results of several fans were validated experimentally. The three-dimensional velocity field was measured in the fixed frame of reference with a triple sensor hot-film probe. Total pressure distribution measurements were performed with a fast response total pressure probe. The results were analyzed, leading to a design method for fans with swept blades. Forward swept fans designed accordingly exhibited good aerodynamic performance. The sound power level, measured on an acoustic fan test facility, improved.